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How to Install CloudLinux on AlmaLinux 9

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How to Install CloudLinux on AlmaLinux 9: A Step-by-Step Guide

CloudLinux is a specialized operating system that enhances the performance, stability, and security of shared hosting environments. If you’re currently running AlmaLinux 9 and want to leverage CloudLinux’s advanced features—such as resource isolation via LVE, CageFS security, and improved stability—this guide will walk you through the conversion process using the CloudLinux OS Converter.

Note: Before proceeding, ensure you have a valid CloudLinux subscription. Always back up your system before making any major changes.


Prerequisites

  • AlmaLinux 9 Installed: Your server should be running AlmaLinux 9.
  • CloudLinux License: Obtain a valid CloudLinux license key.
  • System Backup: Backup your critical data and system configuration.
  • Root or Sudo Access: Ensure you have administrative privileges on your server.

Step 1: Backup Your System

Before starting the conversion, create a full backup of your system. This is crucial in case you need to revert back to AlmaLinux if anything goes wrong.

# Example: Create a compressed backup of your /etc and /var directories
sudo tar -czvf backup-etc-var.tar.gz /etc /var

Step 2: Update Your System

Ensure your AlmaLinux system is fully updated.

sudo dnf update -y

Step 3: Install the CloudLinux OS Converter

CloudLinux provides an OS Converter script that simplifies converting your existing AlmaLinux installation to CloudLinux. Download and install the script:

sudo dnf install -y wget
wget https://repo.cloudlinux.com/cloudlinux/sources/cln/cldeploy
sudo sh cldeploy -k YOUR_CLOUDLINUX_LICENSE_KEY

Replace YOUR_CLOUDLINUX_LICENSE_KEY with your actual CloudLinux license key.


Step 4: Run the Converter Script

Once the script is downloaded, execute it to begin the conversion process. The script will:

  • Replace AlmaLinux packages with CloudLinux equivalents.
  • Update the kernel to the CloudLinux kernel.
  • Configure the necessary repositories.

The script will prompt you to confirm the conversion—review the prompts carefully and proceed when ready.


Step 5: Reboot Your Server

After the conversion process completes, reboot your server to load the new CloudLinux kernel.

sudo reboot

Step 6: Verify the Installation

Once your server has restarted, verify that CloudLinux is installed correctly.

  1. Check the Kernel Version:
    uname -r
    

    The output should display a CloudLinux-specific kernel version.

  2. Verify CloudLinux Features: Check for CloudLinux utilities such as lvectl or cldetect to ensure they are installed and functioning.

Troubleshooting Tips

  • Conversion Errors:
    If the script encounters issues during the conversion, check the log files typically found in /var/log/cl_convert.log for details.
  • Kernel Issues:
    In case the server fails to boot, use your server’s rescue mode to revert changes or troubleshoot kernel-related errors.
  • Package Conflicts:
    Sometimes, third-party packages may conflict during the conversion. Review and update these packages manually if needed.

Conclusion

Converting AlmaLinux 9 to CloudLinux using the CloudLinux OS Converter is an effective way to enhance the performance and stability of your hosting environment. By following these steps—backing up your system, updating packages, running the converter, and rebooting—you can successfully install CloudLinux and start taking advantage of its advanced features.

For more detailed documentation and support, refer to the official CloudLinux resources. Enjoy the enhanced stability, security, and resource management that CloudLinux brings to your server!


 

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